I think I may need a new ECM. My truck has 238k miles and is acting weird. New battery and alternator but the dash tells me to check charging system every 10 minutes and the battery light never goes out but its putting out 14.2 volts. The interior lights come on at times by themselves. The temp is wrong on occasion when I start her up. Radio light sometime are bright and sometimes unreadable. Low tire pressure comes on occasionally. Should I change the ECM?